RESEARCHES ON TWO EXPRESSIONS ABOUT COMPLEX EIGENVALUE
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Graphical Abstract
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Abstract
It is very interesting to study eigenvalues of a linear system by analyzing the properties of its mass matrix, stiffness matrix, damping matrix and so on. After a brief review on the complex mode theory, this paper developed a new set equations about corresponding matrices by recalling the orthogonality between the complex modes of a damped gyroscopic linear system. Based upon this, the applicability of two popular expressions about complex eigenvalues was investigated. The emphasis was given to the questio...
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